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Radiant|Lab Grown|IGI

1.50ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG778660444

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG778660444

Diamond specifications and retailer prices

From $269 CAD
As of November 6, 2026
Save $1,285 CAD (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,554 CAD at MOH London · As of November 5, 2026
View at MOH London

About this 1.5ct lab-grown radiant diamond

This 1.5ct lab-grown radiant sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG778660444 or 778660444. Listed at 16 retailers as of November 5, 2026, with prices from $269 to $1,554, a $1,285 spread on the same certified stone. MOH London lists it at $1,554. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.9°
Pavilion angle33.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778660444
Dimensions8.24 × 5.72 × 3.74 mm
L/W Ratio1.44
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.24 mm5.72 mm1.50 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778660444
Side View
Table 65.0%Crown 38.9°Girdle: Slightly ThickPavilion 33.7°Culet: NoneDepth 65.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,554 CAD|Low: $262 CAD|High: $1,595 CAD|Avg: $799 CAD|-2.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 3$269 CAD
Retailer 16$300 CAD
Retailer 12$312 CAD
Retailer 7$333 CAD
Retailer 8$335 CAD
Retailer 4$584 CAD
Retailer 2$599 CAD
Retailer 14$660 CAD
Retailer 15$800 CAD
Retailer 11$866 CAD
Retailer 10$1,013 CAD
Retailer 13$1,072 CAD
Retailer 5$1,087 CAD
Retailer 6$1,146 CAD
Retailer 9$1,449 CAD
MOH London$1,554 CAD

34 data points across 16 retailers

16 retailers$269 CAD to $1,554 CAD

A
Cheapest Retailer
-
$269 CAD
A
Retailer 2
-
$300 CAD
View
Final sale: no returns
A
Retailer 3
-
$312 CAD
View
A
Retailer 4
-
$333 CAD
View
Retailer 5
-
$335 CAD
View
Price last confirmed 13 days ago
B+
Retailer 6
-
$584 CAD
View
A
Retailer 7
-
$599 CAD
View
A
Retailer 8
-
$660 CAD
View
A
Retailer 9
-
$800 CAD
View
B+
Retailer 10
-
$866 CAD
View
B+
Retailer 11
-
$1,013 CAD
View
B+
Retailer 12
-
$1,072 CAD
View
B+
Retailer 13
-
$1,087 CAD
View
B+
Retailer 14
-
$1,146 CAD
View
B
Retailer 15
-
$1,449 CAD
View
Most Expensive
B
MOH London
LG778660444 · Nov 5
$1,554 CAD
£870 GBP
View
15 more retailers have this diamond
Prices start from $269 CADSave up to $1,285 CAD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.50ct Radiant
$269 CAD